Means for connecting the dobby jack and the harness frame of a loom



' l, 1948. c. E. HAQRIS 9 MEANS FOR CONNECTING THE DOBBY JACK AND THEHARNESS FRAME OF A LOOM Filed Feb. 26, 1946 INVENTOR. r Clam/70a 1Her/"1s Patented Mar. 16, 1948 UNiTED STATES T OFFICE MEANS FORCONNECTING THE BOBBY JACK AND THE HARNESS FRAME OF A LOOM 1 Claim. 1

My invention relates to looms and more particularly to means forconnecting the dobby jack with the harness frame of a loom.

The object of my invention is to provide a means for easily connectingthe harness cord with the dobby jack or harness frame actuator and theharness frame.

Another object of my invention is to provide such connecting means whicheliminate friction between said means and the harness cord as far aspossible.

Other objects of my invention may appear in the following specificationdescribing my invention with reference to the accompanying drawingillustrating a preferred embodiment of my invention. It is however to beunderstood that my invention is not to be limited or restricted to theexact construction and combination of parts described in thespecification and shown in the drawing, but that such changes andmodifications can be made, which fall within the scope of the claimappended hereto.

In the drawing:

Figure 1 is a diagrammatical front view of parts of a loom equipped withthe harness frame connection according to my invention.

Figure 2 is a detail view of a connection member between the dobby jackor harness frame actuator and the harness cord,

Figure 3 is a detail view of a harness cord end screw according to myinvention, and

Figure 4 is an illustration of the method to connect the harness cordend with the harness frame if the end screw is screwed into the harnesscord as shown in Figure 3.

Referring now in detail to the drawing a loom frame supports two sheavesll rotatably. A dobby jack or harness frame actuator 12 is provided inits outer edge with a plurality of semicircular notches !3 arranged atregular intervals from each other,

A connecting member [4 has two prongs I5 extending parallel to eachother. Each of these prongs has a rectangular cross section. At one endthey form a body [6 through which a hole I? extends. The outer end ofthe body is curved so that the end surface of the body is concave. Thatpart of the inner surface of the hole I? located adjacent the body endsurface runs parallel to the concaved curve thereof to form a bearingfor the harness cord.

Adjacent the other end of the prongs IS a pin I8 extends through the twoprongs and a grooved roller I9 is mounted rotatably on the pin betweenthe prongs.

The dobby jack 12 extends between the prongs i5 and the roller 19engages selectively one of the semi-circular notches [3 in the jack.

A harness cord 2%! extends through the hole I? in the body it and istrained over the sheaves I I. Two end screws 2! are screwed into theharness frame 22 of the loom and the harness cord ends are fastened tothese screws.

The end screw according to my invention has a threaded shank 23, and abifurcated portion 24 comprising prongs 25. A pin 28 extends throughthese prongs adjacent their ends and a grooved roller 21 is rotatablymounted on the pin 26 between the prongs 25.

If desired the end screws 2| can be screwed into the ends of the harnesscord 20 and then the screw hooks 28 commonly provided in the harnessframe engage the rollers 2? on the end screw 2! as shown in Figure 4,

Having described my invention, what I claim and desire to secure byLetters Patent is:

In a loom harness frame actuator connector, the combination, whichcomprises, a dobby cord and jack associated with a loom frame, said jackadapted for reciprocatory action, a dobby head loop comprising aconnecting member with spaced parallel fiat prongs integral at one endwith a head member of greater width than that of the prongs and havingan arcuate eye extending therethrough from side to side with the eyecurved in a plane parallel to that of the prongs, a roller pivotallymounted between the opposite ends of the prongs positioned to engagewith spaced notches in the harness frame actuator, a screw attached tothe end of the dobby cord extending through the dobby head loop forattaching the cord to a harness frame, and a roller pivotally mounted inthe end of said screw to which the end of the dobby cord is attached.

CLARENCE E. HARRIS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,521,183 Holmes Dec. 30, 19242,354,180 Brickman July 25, 1944 FOREIGN PATENTS Number Country Date544,501 France Sept. 23, 1922 562,492 France Nov. 12, 1923

